Ball-bearing, electric trolley-wheel.



PATENTED MAY 22 LAND.

BY WHEEL.

R. S. BOYLE & W. G. GLBVE BALL BEARING ELECTRIC TROLL v No. 821,400.

APPLICATION FILED JUNE 16,

ROBERT s. BOYLE, or

FORT BRANCH, AND WALTER G. CLEVELAND, OF

. UYNTHIANA, INDIANA.

l BALLBEARINGa ELEOTFHG 'TWULLlEY-WHEEL- 1. are. 821,400.

. To all whom it may concern:

. tric trolley-wheels;

' trolley-wheel and novel provided with a soc ana, citizens of the United States,

certainnew 'anduseful Improvements 7 er the ball-bearings.

. transverse Be it known that we, ROBERT S. BOYLE, a resident of Fort Branch, county of Gibson, and WALTER GlCLEi ELAND, a resident. of Cynthiana, county of Posey, State of lndihave invented in Ball-Bearing Electric Trolley-Wheels, of which the following is a specification.

This invention relates to ball-bearing elec Theobject of our invention is the provision of a light, simple, and comparatively inexpensive ball-bearing electrictrolley-wheel having improved means for journaling the provision for the re- IIIOViLl Of the trolley-wheel and its bearings, whereby assembly or separation of the parts may be quickly and easily accomplished.

The invention also contemplates the pro vision of an improved ball-bearing for a trolicy-wheel and a novel construction of the trolley head or i harp whereby durability,

strength, and securing of the parts is had with slight possibility of derangement to afford means for quick and easy repair when necessary.

The detailed embodiment which at this present time is conceived is set forth fully hereinafter, and the novel features of the invention are recited in the appended claims. y

In the accompanying a side elevation; Fig. 2, a a front elevation; Fig. 3, a front elevation with the hinged part of the harp thro'wnback; Fig. 4", a side elevation with the bin ed part of the harp thrown back and the-tro leyheel removed; Fig. 5, a section on line 4 a of Fig. 1; Fig. 6, a section on line 6 6 of Fig. 2, and ig. 7a detail of one of the invention The harp or trolle head 1 is of metal and list 2 to receive the trolley-pole 3 and fasten thereto in any preferred manner. The her is forms in two duplicate arts considers longitudinally and ly thereof, onelof the parts 4 being rigid; with t e socket 2- and'the other part5 being suitably hinged to the part4 at 6. screw 7 or other suitable fastening secures the hinged part. 5 to the stationary part 4. of the harp. "As, will be observed, the two parts 4 and 5 are of substantially U shape viewed in front elevation, and in-each arm of Specification of Letters Patent. I Application filed-June 16,1994- Serial No. 212,868-

the best we have drawings, Figure 1 is be carried on quickly and 'ratenteo May 22, 1906 the part 4 and in each arm of the part 5 are provided triangular boxes 8, which when the parts 4 and 5 are-together constitute hollow lar apertures 9. and 10, on opposite sides thereof, the inner aperture 10' beingforined with ,a surrounding flange 11, which prevents the trolley-wheel from striking the The ball-bearings consist of s uare plates 12 and. 13', secured together at t eir corners by rivets orfastenings 14 and provided with a ball-race formed by the annular grooved parts 15 and 16. Within and extending through the plates 12 and 13 is a hollow or tubular cone 17, having a peripheral bailrace 1.8. Balls 19 run in this ball-race 18 and -in the ball-race formed by the annular grooved parts 15 and 16. The respective plates 12 and 13 are received and lit in the boxes 8, and the width of the annular grooved parts 15 and 16 is such that the lit is a snug one. so that the ball-bearings are socured firmly in position when the parts 1 and 5 of the harp are secured together by the screw T;Which leaves the ends of-the tubular cone 17 projecting slightly beyond thefaces of the harp, and said cones are free to turn -with the greatest ease. The trolley-wheel 20 has its shaft or spindle 21 integral therewith and received snugly and tightly in the cones 17, sothat as said trolley-wheel ro tates the cones turn with it and the balls con stitute the bearing for said trolley-wheel.

It will be seen that by simply throwing back the hinged part 5 of the harp the bearings and trolley-wheel can be taken out and separated for replacement by new hearings or a new trolley-wheel or forthe institution of any other repairs, and these operations can easily.

We have shown the plates 12 and 13 and the cones 17 as'-fornied of sheet metal with struck-up ball-races; but it is obvious that the: ball-races could be cast or cut out from solid metal and that other changes of conv struction could be resorted to in forming the harp, and the shaft of the trolley wheel could be secured to. said wheel instead of being formed integral therewith. We do not, therefore, limit ourselves to the specific construction herein shown and described, but lay claim to all modifications falling within the spirit and scope of the invention.

square boxes provided with the alined cii 'cu-' Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, 1s

1. In a trolley, the combination with a v trolley Wheel and axle, of a trolley head or harp comprising sections adapted for opening in relation to each other in a general trans verse direction to the trolley-Wheel axle, and

removable ball-bearings for the axle Whichare held in position by the sections of the harp When closed.

2. In a trolley, the combination with a trolley harp or head comprising sections adapted to open and close in relation to each other and havim means for holding bearin s h K h when closed, of bearings removably held by said harp-sections when closed, and a trolley Wheel journaled in said bearings.

3. In a trolley, the combination With a trolley help or head comprising separable sections adapted to open and close in relation to each other and having means for holding bearings when closed, 0! self-contained ballbearings removably held by said harp-sections when closed, and a trolley-wheel jour- .aled in said bearings.

4. In' a trolley, the combination With a trolley harp or head comprising sections adapted to open and close in relation to each other and having boxes adapted to hold bear ings when the sections are closed, of seli-contained bearings received in said boxes and held. there when the harp-sections are closed, and a trolley-Wheel j ournaled in said bearings.

5. In a trolley, the combination with a trolley harp or head comprising sections adapted to open and close in relation to each other andhaving boxes adapted to hold bearings When the: sections are closed, oi self-contained ball-bearings received in said boxes and held there when the harpsections are closed, and a trolley-Wheel join'naled in said ball-bearings.

6. In a trolley, a harp or head composed of relatively movable substantially U-shaped sections adapted to close together, said sections having boxes, self-contained removable bearings in said boxes, and a trolley-Wheel journaled in said bearings.

7. In a trolley, a harp or head composed of relatively movable substantially U-shaped sections adapted to close together, said sections having boxes, self-contained removable f ball-bearings in said boxes, and a trolleywheel journaled in said ball-bearings.

S. In a trolley, the combination With a harp or head, of ball-bearings held by the arms of said harp or head and comprising plates having grooves which together form a ball-race, fastenings directly securing the plates together, a cone having a hall-race, balls in said ball-races, and a trolley-Wheel supported by said cones.

9. In a trolley, the combination with a harp or head vcomprising substantially U- shaped relatively movable sections having matching polygonal boxes, of exteriorly-polygonal bearings removably received in said boxes, and a trolley-Wheel supported by said bearings.

10. In a trolley, the combination With a harp or head comprising relatively movable sections having matching boxes, of bearings therein by the sections when closed, and a trolley-Wheel supported by said bearings.

11. In a trolley, the combination with a harp or head comprising hinged sections having matching polygonal boxes, of exteriorly polygonal bearings removably received in and fitting said boxes, and a trolley-Wheel supported b r said. bearings.

12. A trolley-harp comprising a fixed bifurcated arm provided With bearings, a bi furcated upper arm hinged to the fixed arm, and a trolley-Wheel lying between the branches of the arms and having integral trunnions engaging the bearings.

13. A trolley-harp comprising a fixed bifurcated arm provided with bearings, a trolley-wheel having integral trunnions which engage the bearings, a hinged bifurcated upper arm engaging the trunnions and means for locking the upper arm so that the Wheel cannot be thrown from its bearings.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

ROBERT S. BOYLE. WALTER G. CLEVELAND.

lVitnesses FRANK C. GORE, PERCY O. HOPKINS.

removably received in said boxes and held 

